弯管流量计试验研究
Experimentation and Study on Pipe Flowmeter
细腰管流量计
Venturi [type flow] meter
直管式科氏质量流量计
Coriolis type mass flow meter with straight sensor tube
金属管浮子流量计
metal tube rotameter
Metal tube variable area rotameter
金属管式流量计
metal tube type flowmeter